Pressure indicating device



2 Sheets-Sheet l Algernon S. Badger,

I Ma 0 m B u w E 4 7 2 v M w m w W i: I z 3 a fl w 2 A H v 7A7 m w W m m Feb. 16, 1954 A. s. BADGER PRESSURE INDICATING DEVICE Filed Dec. 16, 1950 FIG. I.

A. S. BADGER PRESSURE INDICATING DEVICE Feb. 16, 1954 2 Sheets-Sheet 2 Filed Dec. 16, 1950 Y M F INVENTOR. Algernon S; Badger,

l'ey which is-arrangedabovethe siipporting} berand at--leasta-second Patented Feb. 16, 1954 assighp frt y Hon ill The present invention is directed to a device .for indicatingepi essure.nMoresspecifically, the invention is directed to a device for indicating high Fig 3 is aviewotakenealong. the line III-III of 2;.and N p p 4is a"view .with parts cut away similarto pressuresninder conditions offstressrandrotation. -Fig.-3-showing.the:arrangement: of the elements The present-.inventionmaybe.briefiy described 5 thereoi. V

as a device refinementspressdrewhioh includes --Reerri-ng now to the drawingand-to Figslto a supporting member carrying at least t fi rst "pul- ,m1m ra1. I repr e tsa fram -mem r for th memindicating means-generally-idesignated as 12. l'ey carried -bydthe eThiscindieatingemeansjs arranged-mahousing l3 su'pporting--member and--a ended below"'t. A d-provided with awindow '1 dinwhich the indicating iil-ley-is-mounted 6 he 'uppor'tir-i lnem- ;-means. l2=is-.locat ed. The-indicating means l2 deb erii/(-ai point-intermediate the first and -s'e'cend .lfines-a supporting member it which is attached pulleys. A stationary piston guide member is arto the housing 13. The gauging indicating ranged in the supporting member and defines a means is provided with a first pair of pulleys l6 passageway connected to a source of fiuid pres- 1 and a second pair of pulleys l1. Pulley It is carsure. Embracing the guide member is a piston Tied y a Shaft 3 attached to the Supporting which defines therewith a piston cylinder in fluid member l5 and is firmly afiixed thereto by a nut communication with the passageway. A com- I9. Pulley l! is carried by a shaft arranged in a pression means is arranged in the supporting bearing 2| carried by an extension member 22 of member and bears against and normally urges 20 t e S ppe member Shaft 29 is provided the piston upwardly. Arranged below the sup-- With a sprocket wheel 23 which is attached to a porting member and carried thereby is a wheel, chain 24 which, in turn, is attached to a piston such as asprocket wheel, which is operatively conmember 25. The supp member i and nected to the second pulley. A free end of the pist n 25 fin an int al piston y d 26 piston is connected to the wheel by suitable con- 2 surrounding a stationary guide member 21 which necting means, such as a chain which engages defines a central passageway 28 connecting to a with the sprocket wheel and is attached thereto. u c of flu d pr s u b ndu t 9- e p s A cable is connected to the second and third pul- 25 is embraced y a compression r b a m a leys and. extends over the first, second and third 30 Su s a helical coil Spring Which urges the pulleys, the third pulley provided with means for 50 piston 5 in an pw d direction in t s pp maintaining tension on the cable, the tension ing member l5. The guiding or stationary memmeans being connected to the third pulley. The ber 21 and the piston member 25 are provided with cable carries an indicator, such as a suitable arm a Sealing means, Such as n 3 A guide or bar, for registering pressure on a scale conbushing 32 is arranged in a space 33 defined by nected to an exterior surface of said supporting 35 the Piston 25 and he e b r 2 and embraces member on entrance of fluid into the piston cylinrecirculating balls 3 a an d ther in. Sleeve der under a pressure sufficient to .overcome the 32 Serves as a ground bearing ac and return force exerted by the compression means against Passage for the b the piston. The indicating means 12 is provided with a The device of the present invention is suitable third Pail of pulleys 35 which carries a flat Coil for employment where a supply of fiuid pressure Spring 36 Which is encased n a housing p is available, such as a hydraulic fluid pressure. Vided with a cover Plate Attached t0 pill- The invention has particular application to a ys by a clamp 38 is a cable 4B which passes torque indicating device, such as described in an over pulley and is attached pulley 35 by application for Robert R. Crookston and James S. Screw 4L Pulley 3 s a ranged on a shaft 42 Waters entitled Torque Indicating and Shock Carried y the Supporting member The Sp Absorber Device and filed December 16, 1950. 6 is a he to t e pul y 5 by a suitable con- The device is of rugged construction and is denection means such as a screw 36a and to the signed to endure vibrations and rotational stress. shaft 42 as shown. Arranged on the cables ie of The invention will be described in further dewhich there are two in number is an indicator bar tail by reference to the drawing in which 43 which is displayed in the window Id of the Fig. 1 is a front elevational view in partial housing I3. I section of the apparatus of the present invention; This indicator bar 43 may be suitably arranged Fig. 2 is a view taken along the lines II--II of in juxtaposition with vertically spaced markings Fig. 1; I 44 as shown inFig. 1.

The device of the present invention operates asfollows:

As a result of fluid pressure being transmitted through conduit 29 through a hydraulic fluid therein being acted on by compressive force, hydraulic fluid is forced into passageway 28 of the indicating means [2. The hydraulic fluid causes the piston 25 to move downwardly which permits rotation of the sprocket wheel 23 through chain 24 which, in turn, permits rotation of the pulley I! and the pulley I6 by cable 40, tension being maintained on the cable 40 by spring 36 which causes the cable 40 carrying the indicator 43 to move upwardly allowing pressure or force to be indicated on the scale markings 44.

The nature and objects of the present invention having been completely described and illustrated, what I wish to claim as new and useful and to secure by Letters Patent is:

1. A pressure signalling device which comprises a supporting member, at least a first pulley carried by and arranged above said supporting member, at least a second pulley carried by and arranged below said sup-porting member, at least a third pulley mounted on said supporting member at a point intermediate said first and second pulleys, a sprocket Wheel carried by said supporting member by means common to said second pulley and operatively connected thereto, a chain connected to and engageable with said sprocket wheel adapted to rotate said sprocket wheel by movement of said chain into engagement with said sprocket wheel by a pressure.

responsive actuating member connected to one end of the chain, at least a cable connected to said second and third pulleys and extending over said first, second and third pulleys, means for maintaining tension on said cable connected to said third pulley, and an indicator bar carried by said cable adapted for registering pressure on a graduated scale carried by said supporting member cooperating with said indicator bar on rotation of said sprocket Wheel responsive to movement of said chain by said pressure responsive actuating member into engagement with said sprocket wheel.

2. A device in accordance with claim 1 in which the compression means is a helical coil spring and the tension means is a fiat coil spring.

3. A device in accordance with claim 1 in which the tension means is a fiat 0011 spring arranged in a housing mounted on said third pulleys.

ALGERNON S. BADGER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,634,785 Laflin July 5, 1927 1,701,412 Lawrenz Feb. 5, 1929 1,843,479, Caille Feb. 2, 1932 2,137,495 Kershaw Nov. 22, 1938 2,502,832 Dockendorfl Apr. 4, 1950 

